a planned drawing, consisting of a line or lines, showing how two or more sets of numbers are related to each other Plot a graph of height against age. The graph shows how house prices have risen since the 1980s. Language BankillustrateReferring to a chart, graph or table This bar chart illustrates how many journeys people made on public transport over a three-month period. This table compares bus, train, and taxi use between April and June. The results are shown in the chart below. In this pie chart, the survey results are broken down by age. This pie chart breaks down the survey results by age. As can be seen from these results, younger people use buses more than older people. According to these figures, bus travel accounts for 60% of public transport use. From the data in the above graph, it is apparent that buses are the most widely used form of public transport. See related entries: Mathematical terminology Word Origin late 19th cent.: abbreviation of graphic formula.Extra examples Results can be shown in numeric or graph form. She drew a graph showing the relationship between costs and sales. The figures are all plotted on a graph. The small squares on the graph paper are 1 mm wide. The statistics can be depicted as a graph. We can see on this graph how the company has grown over the last year. Draw a graph showing how wages increased in the 18th century. He drew a simple line graph. Plot the information on a graph. The graph shows how oil prices have risen since the start of the conflict. The vertical axis of the graph shows the percentage of species affected. You will need some graph paper.